120421424400 has 360 divisors, whose sum is σ = 414628631712. Its totient is φ = 29772288000.

The previous prime is 120421424393. The next prime is 120421424443. The reversal of 120421424400 is 4424124021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 102835815 + ... + 102836985.

Almost surely, 2^120421424400 is an apocalyptic number.

120421424400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120421424400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207314315856).

120421424400 is an abundant number, since it is smaller than the sum of its proper divisors (294207207312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120421424400 is a wasteful number, since it uses less digits than its factorization.

120421424400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 120421424400 its reverse (4424124021), we get a palindrome (124845548421).

The spelling of 120421424400 in words is "one hundred twenty billion, four hundred twenty-one million, four hundred twenty-four thousand, four hundred".